Garnett, David, author
Longman , 1991
Buku Teks
King, Peter, author
Routledge, 2016
Buku Teks
Rowe, Peter G., author
MIT Press, 1995
Buku Teks
Sylvestre, John, author
Oxford University Press, 2017
eBooks
Dube, Yves, author
Queen's Printer, 1957
Buku Teks